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Task 1
In 1987, a 1-gigabit-per-square-inch magneto-optical recording with a blue-wavelength gas laser was demonstrated. A few years later, the same recording density barrier was broken for magnetic recording with the help of the first magnetoresistive (MR) head. In 1989, Fujitsu unveiled a (non-removable) 8-inch magneto-optical drive with a capacity of 8.9MB. Fujitsu exhibited at the Tokyo Business Show a pre-series model of the high performance 5.25-inch MO drive developed jointly with NIPPON TELEGRAPH and TELEFONE CORPORATION. This MO drive was the only one in the world to be written in a “single pass” instead of the customary “three passes”. In 1992, Fujitsu marketed the world's first 1-inch-high 128MB 3.5-inch MO drive. The seek time measured only 65milliseconds! In 1993, Fujitsu underscored its leadership position in magneto-drive technology by developing a 230MB 3.5-inch MO drive which could also read and write the older 128MB disks. In 1994, Fujitsu presented to the world its first 230MB 3.5-inch MO drive completed with IDE interface in a casing only 17mm high. This MO drive was developed for use in notebook computers. A special version was also developed for APPLE Powerbooks. In 1996, Fujitsu rolled out the third generation of 3.5-inch MO drives. The new products supported memory capacities of 128MB, 230MB, 540MB and 640MB. For the first time, a special recording method (LIMDOW) enabled data to be written to disk in a single pass with just one laser. By 1998, Fujitsu introduced a vastly improved second generation of 640MB 3.5-inch MO drives. In the same time, the production costs were drastically reduced. In 1999, Fujitsu revolutionized the market for 3.5-inch MO drives, breaking the 1-GB barrier for the first time. The new 1.3GB MO drive was jointly developed by SONY (medium) and Fujitsu (drive). In 2000, Fujitsu unveiled the world's first 1.3GB 3.5-inch MO drive with an IEEE 1394 (Firewire) interface. In 2002, Fujitsu introduced the first 2.3GB 3.5 inch MO with a data transfer rate of 8.38 MB/s. Fujitsu unveiled the world's first USB - powered Pocket size MO. Task 2 2003
- H. NEAL BERTRAM, Funding
Agency: Endowed
Chair and Professor, Univ of California-San Diego, La Jolla, CA "For
fundamental and pioneering contributions to magnetic recording physics research,
applications and education." 2002
- CHRISTOPHER H. BAJOREK, Funding
Agency: KOMAG,
Inc., San Jose, CA "For
leadership in the development and manufacturing of magnetoresistive recording
heads for data storage devices." 2001
- TU CHEN, Funding
Agency: Komag,
Incorporated, San Jose, CA "For
leadership in the advancement of thin-film materials, tools, and processes used
for magnetic information disks, and their commercialization as products." By adding a new product into the highly competitive data-storage technology market, our NCT application has advanced scientific knowledge by highlighting the pros and cons of high-density-magneto-optical storage. The pros of our NCT application are definetly, apparent (high storage capacities ranging from 100mb-10gb of storage on compact discs and speedy write and read times); however, the cons have shown to heavily outweigh these apparent pros. The cons are not so much of those of our NCT application, but rather, they are the pros of the adversary product, the CD-R. The CD-R has beaten our application in the market place because it is a simpler, cheaper to make, and already widely known product. The potential of High-Density-Magneto-Optical Data Storage is still high for those who demand higher quality storage at the expense of cost or simplicity.
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http://www.usbyte.com/common/history_of_storage.htm - History of Data Storage http://www.usbyte.com/common/White papers/MO_WP.htm - Advancement of Knowledge http://www.fujitsu.com/sg/services/computing/storage/mo/about/history - History of Fujitsu http://www.usbyte.com/common/MOsystems.htm - Basics of MO Storage |